Carrier dust accumulators



Jan. 28, 1969 E. CARRIER T $423,783

CARRIER DUST ACCUMULATORS Filed Dec. 6. 1965 INVE NTOR E 1 hege Carrier United States Patent 4 Claims ABSTRACT OF THE DISCLOSURE A dust collector for attachment to the drill rod of a rock drill or the like for collecting the dust particles during the drilling operation to. protect the health of the operator.

This invention relates to new and useful improvements in devices for collecting dust from drilled holes through rock or other material.

The invention comprises a dust accumulator within which is disposed the dust, said dust being removed by a vacuum system for which no direct claim is made. The invention, per se, consists of a metal domed chamber constructed in two halves to allow placement around a drill rod, a top diaphragm to encircle the drill rod to hold a vacuum, rubber isolating buffers at the base of the dome to separate the accumulator from the rock or other surface and to suit the terrain and tubular extensions to allow angular or horizontal drilling operations. It is to be understood that the accumulator sits directly over the area in which a hole is to be drilled.

The primary object of the invention is therefore the provision of a device to collect dust from drilled holes and to dispose of said dust into a container therefor.

Another important object of the invention is to protect expensive machinery from the hazards of breakdown and damage from rock dust and the loss of valuable time caused thereby.

Other important objects are the effectiveness of the device, and dependability thereof and the comparatively low manufacturing cost.

With these and other important objects in view that may appear as the description proceeds, the invention consists in the novel arrangement of cooperating elements as hereinafter more specifically set forth, claimed and shown in the accompanying drawing forming part of this application and in which:

FIGURE 1 is a perspective view of the dust accumulator constructed in accordance with the present invention and to be used for vertical or horizontal drilling.

FIGURE 2 is a view of the device with the sections of the collection chamber in open position and the adaptor positioned therein.

FIGURE 3 is a perspective view of the adaptor used when drilling in confined spaces.

FIGURE 4 is an elevation of an adaptor showing the shaped isolating buffers when operating the drill at an angle.

FIGURE 5 is a perspective view of one-half of the isolating buffer showing the buffer and the base plate.

FIGURE 6 is a perspective sketch of the diaphragm seal.

FIGURE 7 is a sectional view through the walls of the accumulator showing the closure of the two halves.

Referring more in detail to the drawing in which similar reference characters designate corresponding parts throughout the several views, it will be seen the invention comprises a domed chamber 1, constructed in 2 halves, one half male 2 and the other female 3. The two halves are hinged at 4 together and are provided with a locking clip 5 which engages with a stud 6 when the 3,423,783 Patented Jan. 28, 1969 chamber is closed. A metal shoulder 7 is an integral part of the half section 2 and extends the whole length of the inside edges. A solid particle catcher 8 is attached to the base of each half of the chamber and prevents heavy grits passing into the dust collector.

The design and construction of the unit is such, to allow the chamber to be opened for placement around a drill shaft 9 and its removal when lengthening or shortening the drill rod.

At the top of the dome, the invention provides a hardened rubber gasket 10 in two halves with a central ur thane seal gasket 11 also in two halves, FIGURE 6. Both gaskets and seals are of a size to suit the specific drill being used, and the urethane gasket 11 acts as a diaphragm seal to hold the vacuum within the chamber. A companion flange 12 to the flanged top 33 of a baffle 14 has holes to take bolts with self-locking nuts 13 and the rubber gasket 10 has similar holes. Each half of the gasket is placed over the baflle flange, the companion flange in turn placed on the gasket 10 and bolted together by the bolts 13.

At the top of the chamber the metal dust bafile 14 continues into the chamber from its neck and encircles the drill shaft 9 to prevent the dust escaping between the shaft 9 and the urethane diaphragm seal 11.

At the bottom of the chamber, bolts 15 are used to attach the adhesion plate 16 and to this plate shaped rubber vibration isolators 17 are adhered. The nuts to the bolts 15 are again self-locking to prevent loosening. A recess 18 on the inner radius of the adhesion plate 16 is formed to receive the flange of the adaptor unit 19 and pins 20 in the recess engage in slots 21 of the upper flange 22 of the adaptor unit, FIGURE 3. The slots 21 occur on four edges allowing the unit to be used at any angle.

The invention provides a stabilizer 23 to hold the chamber in position and an anchor rod 24 is connected to the end of the drill boom.

To the side at the top of the chamber an outlet tube 25 connects to the vacuum system for the dust removal and on the opposite side plastic inspection window 26 allows the checking of the operation.

The adaptor 19, FIGURE 3, is used when drilling in confined space and comprises a metal tube to which are afiixed two flanges. The upper one 22 is of a diameter to set in the recess 18 of the adhesion plate and as previously mentioned has four slots which engage with the pins equally located in the rebate of the plate 16. The lower flange 27 is of a diameter to equal the base of the vibrators 17 and forms an integral part of the unit when the adaptor 19 is added. Beneath this flange a preformed rubber isolating buffer 28 is adhered both to the underside of the flange and the outer wall of the adaptor tube.

FIGURE 4 illustrates an adaptor for use at an angle and the metal tube 29 is of the same diameter as the tube 19 but the bottom of the tube 30 is cut at an angle of 45 degrees. The preformed rubber isolator 31 is adhered to the underside of the lower flange and to the outer face of the projecting tube and this isolator is also shaped to a 45 degree angle.

Attached to the inner semi-circular edges of the chamber base 8 are two flanged semi-circular collars 32. When closed the edges of the collars meet and provide support for the adaptor, FIGS. 3 and 4. The space between the collar and the walls of the chamber forms a solid particle catcher. Such solids are not anticipated but should any particles be too heavy for extraction by the suction they will fall into the space provided.

It is believed that the construction and advantages have been fully set forth and that further detailed description is not required.

While the preferred embodiment has been disclosed it .3 is understood that minor modifications may be resorted to without departing from the spirit of the invention.

The embodiments of the invention which an exclusive property or privilege is claimed are defined as follows.

I claim:

1. A dust collector for attachment to a rock drill shaft comprising a dome shaped chamber formed of two sections removably secured together in surrounding relation to the drill shaft, means sealing the top of said chamber to said drill shaft, a dust particle bafile depending from the top of said chamber in surrounding relation to the drill shaft, a baffle in the bottom of said chamber having a central opening, "a conical vibration isolator extending from the bottom of said chamber having a central passage in alinement with the opening of said second mentioned baffie, and means for creating a suction in said chamber.

2. A dust collector as described in claim 1 having a stabilizer attached to the side of said chamber for holding the chamber in position.

3. A dust collector as described in claim 1 including a tube adapted to be inserted in the passage of said vibration isolator, and a vibration isolator attached to the end of said tube having an angular lower face.

4. A dust collector as described in claim 3 including means for adjustably securing said tube in position.

References Cited UNITED STATES PATENTS 895,228 8/1908 Bartlett l75-2ll X 981,409 l/l9l1 Goodspeed l75-209 2,041,689 5/1936 Baumeister et a1. 175-209 X 2,590,958 9/1952 Goodrich 175209 ROBERT W. MICHELL, Primaly Examiner.

US. Cl. X.R. 2l760 

